Laboratory safety rules: always wear protective equipment (goggles, lab coat, gloves); never taste chemicals; heat liquids carefully by pointing test tubes away from people; know the location of fire extinguishers and first aid. Common equipment: Beaker (mixing), Conical flask (reactions), Burette (accurate liquid volume), Pipette (measuring), Bunsen burner (heating). Hazard symbols: Flammable (flame), Corrosive (acid drops on hand), Toxic (skull), Oxidising (circle with flame).